Thanks, yeah I heard of that but havent figured out how to do it.. will surely check it up..
-edit- cant find how to do it, btw because this is a mainquest it sounds strange if you could quit or end it??
It's simple and easy to solve this via console. Does not need reload a old save.
Do this:
Open console ~ (for me it's the ' key)
1 - showquesttargets
2 - Page up and Page down untill you find any questID you think could be your current quest. If you're not sure. Make a quicksave and do this:
movetoqt QuestID
Do this for each quest you find potentially the quest you're looking for.
Once you found, do this:
setstage Quest ID XXX (try numbers from 0 to 100, but be aware.. 100 is "complete quest).
This may help you, I hope.